Tool for rotating screws and other objects



NJ w. J. WALSH 2,010,616

TOOL FOR ROTATING SCREWS AND OTHER OBJECTS Filed Dec 8, 1934 INVENT E/Patented Aug; 6.193s I: 7 l a 8 2 010 516 ,UNlTED 'STATES PATENT OFFlCE'rooL FOR ROTATING SCREWS AND OTHER OBJECTS.

Nicliolas William John Walsh, Doncaster,

Victoria, Australia Application December 8, 1934, Serial No. 756,643 InAustralia November 22, 1932 6 Claims. (01. 145-50) This inventionrelates to tools of the type in of aspring l2 which is arranged inrecesses ll in which the force of a blow is utilized to cause presthemembers 8 and 9. When the members 8 and sure, shock and turning movementto be trans- 9 are spaced apart the maximum distance longirnittedsimultaneously for the purpose of turning tudinally the parts ll betweenrecesses l0, and

screws and other objects. Tools of this type the parts ll betwcenrecesses ll overlap. 5

are particularly useful for loosening corroded The end 8 of member 8projects beyond the screws and bolts and for tightening screws inelecend l of easing l and is adapted to carry a suittrical machinery.able fitting as a socket l3 to hold a tool such as The object of thisinvention is to provide a ascrew-driver bit i l/which may beprovidedwith 10 compact and efficient tool of the type referred to, aoove NZ1 o be e ga d by a Spring Dressed 10 which does not requirespecial skill to use and stud I3 which is arranged to transmit turningmovement The size and shape of head I are variable and in eitherdirection at will, such direction being it may be provided with atransverse hole l5 to determined by preliminary rotation of ahandreceive a tommy-bar to assist turning when the piece. tool is usedfor ordinary twisting purposes. 15

This improved tool includes a tubular hand- In use. end 8-" of therotatable member 8 is fitted piece and within said handpiece two memberson with suitable means to engage the object to be which are co-operatinghelical faces, one of said turned, for example if the object is a screwhavmembers being rotatable relatively to the handing a slotted head asocket as l3 and a screw- 33 piece and the other non-rotatable, the saidmemdriver bit as [4 is fitted and the end of the bit is bers beingnormally located by spring means so fitted in the screw slot. Thehandpiece 1 is then that a primary rotary movement of the handrotated inthe direction in which the screw is to piece enables the direction ofrotation of the robe turned until the complementary faces I0, tatablemember to be determined. ll are in contact. If a right-hand threaded Butin order that this invention may be more screw is to be tightened thehandpiece is turned 25 readily understood it will now be described withanti-clockwise to the position illustrated in Fig. 4 reference to theaccompanying drawing in which: while if such a screw is to be loosenedthe hand Fig. 1 is a sectional elevation of a tool fitted piece isturned clockwise until the parts are posiwith an adaptor and ascrew-driver bit. tioned as in Fig. 2. The head l is then struck Fig. 2is a diagrammatic view showing the posiwith suitable implement such as amallet, caus- 30 tion of the parts for transmitting rotary moveing thehandpiece 1 and member 9 to move rapment in a counter-clockwisedirection. idly and transmitting pressure. shock and turn Fig. 3 is afragmentary view of parts in Fig. 2 ing movement simultaneously tomember 8. Reafter operation. lease of handpiece 1 allows the spring l2to move Fig.4is a diagrammatic view showing the posithe members 8 and 9to normal position after 35 tion of the parts for transmitting rotarymove; which further partial rotation of the handpiece ment in aclockwise direction. again locates the parts 8 .and 9 in operative posi-Fig. 5 is a fragmentary view of parts in Fig. 4 tion. A few blows issuflicient to loosen even firmafter operation. ly fixed and corrodedscrews without damage. If

l is a tubular handpiece having a solid head I a broken or smooth-headedscrew or stud is to be 40 and a flanged end l Members 8 and 9 arearrotated, a bit having a cold-chisel point of suitranged within thehandpiece and each said memable form may be employed. If a nut or boltber has any suitable number of approximately V- head is to be engaged. atube spanner socket or shaped recesses I0, I I. Member 8 is rotatableother suitable fitting may be fitted to end a relatively to thehandpiece while member 9 is I claim:

fixed against rotation relatively thereto and may 1. A tool for turningscrews and the like, combe integral with head l which is connected tothe prising a handpiece, a rotatable member and a casing I by a screwthread T and in addition is non-rotatable member in said handpiece,means suitably fixed thereto as by welding. to locate said members inspaced apart positions,

Each face it), I l' respectivelyof recesses l0 and co-operating helicalfaces on said members 50 and H is helically curved so that when a faceltl whereby when a blow is transmitted to the nonis in contact with aface H and member 9 is rotatable member. the rotatable member is causedmoved toward member 8 the latter is partially to transmit pressure.shock and rotary movement rotated. Member 8 is normally located againstto a tool connected to it.

an abutment such as a casing flange 1 by means 2. A tool for turningscrews and the like comprising a tubular handpiece and within saidhandpiece a member fixed thereto and another member which is relativelyrotatable and movable longitudinally, V-shaped recesses with helicalfaces on both said members, means to locate said members in spaced apartbut inter-engaging position, so that when said handpiece and thenon-rotatable member are rotated relatively to the rotatable memberco-acting helical faces engage whereby pressure. shock and rotarymovement may be transmitted to the rotatable memher, the direction ofrotation of the said member being determined by the direction ofrotation of the handpiece.

3. A tool as in claim 1 within each said memher a plurality ofapproximately V-shaped recesses with co-operating helical faces, theprojections between the recesses overlapping when said members are inspaced apart position.

4. A tool for turning screws and other rotatable elements comprising atubular handpiece having a head at one end and a flange at the otherend, a member within the handpiece and fixed to said head, a partiallyrotatable member within the handpiece which is longitudinally s1idablebetween said flange and the fixed member, spring means to normallylocate said slidable member, a pair of V-shaped recesses with helicalfaces in each said member and projections between said recesses whichoverlap.

5. A tool as in claim {1 within the head a verse hole to receive a bar.

6. A tool as in claim 4 in which the fixed member is integral with. the'head, and means to connect said head to the casing;

NICHOLAS WILLIAM JOHN WALSH.

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